Tuesday marks the 40th anniversary of Roe v. Wade, the U.S. Supreme Court ruling that made abortion legal in all 50 states.

Those in favor and against the practice have been fighting ever since. Today the debate is just as alive as ever, with both sides claiming victories and neither backing down.

"We're going to keep on going," one pro-life activist vowed. "And we're not going to stop till every child is saved."

"The right to choose is as valid as the right to bear arms," pro-choice activist Seamus Ennis said. "The right to choose was recognized by the courts 40 years ago and again is as valid as the right to bear arms or any other religious freedom or right."

According to the group Remembering Roe, the decision made by the Supreme Court in 1973 has cost the United States more than 55 million people. That's roughly one baby aborted every 30 seconds.

After the Roe v. Wade decision America became one of the only Western countries to offer no legal protection to the unborn at any stage of development.

Usually, the March for Life is held in the nation's capital on the actual anniversary of the Roe v. Wade decision.

Who's really winning the fight over abortion? Penny Nance, president of Concerned Women for America, has that and more, on CBN Newswatch, Jan. 22.

This year, it will be Friday, Jan. 25, to provide a few days separation from President Obama's inauguration earlier in the week.

One pro-life group produced a video for this year's march.

They used the president's own words about "protecting children" from his address to the nation after the December Sandy Hook Elementary tragedy.

"Can we honestly say that we're doing enough to keep our children, all of them, safe from harm?" the president says in the video. "I've been reflecting on this the past few days, and if we're honest with ourselves, the answer is no."

The pro-life movement celebrates progress today with the closing of the nation's 1,500th abortion clinic. Only 660 remain.